Phil Rogers of MLB.com was told by sources that Tanaka has become a “top priority” for the Cubs’ front office. The club is expected to have a large contingent in attendance to watch him pitch in the Japan Series, which begins this weekend.

Regarded as the best pitcher in Japan, Tanaka has been on an incredible run this season, going 24-0 with a a 1.27 ERA and 183/32 K/BB ratio over 212 regular season innings. The 24-year-old has remained undefeated during the postseason, including a seven-hit shutout earlier this month.

Tanaka’s team, the Rakuten Golden Eagles, are expected to make him available via the posting process once the Japan Series is over. The thought is that the bidding could rival the $51,703,411 fee the Rangers paid to secure exclusive negotiating rights with Yu Darvish two offseasons ago. The two sides eventually agreed to a six-year, $56 million contract.